Improved raileoad-sill and ohaie



@uitrit gisten @stent ffice.

Letters .Patent No. 77,119, lated April 21, 1,868..

IMFROVED RAILROAD-BILL AND CHAIR.

cilge tlgehnle feierten in in ilgeee @etten nteut :me meetingY niet etthe teme;

TO ALL WHOM *IT MAY CONCERN:

Beit known that I, JASPER SNELL, o t Pottsvillc, in the county ofSchuylkill, and State oi' Pennsylvania,

have invented a new and improved Railroad-Sill and Chair; and I dohereby declare that the following is a full,

clear, and exact description thereof', which will enable others skilledin the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification.

This invention 'relates to an improved railroad-sill and chair, andconsists of a sill of suitable material; and I prefer making it of iron,composed of a base-plate having inclinedwalls set upon it, forming ati'ough, in the bottom and near cach end whereof is a mortise, in whichis laid a spring. l

A plate, provided with twolugs on its under side, dove-tails into thetrough; the lugs setting into the mortises and resting on the springs.l' v A T-shaped chair, having jaws at one end to t the shape of the baseof the rail, "dove-tails into the trough, and sits upon one-half of theplate. One side of the base of the rail is then inserted between thejaws of." the chair, anda-corresponding chair is'then dove-tailed intothe trough, and embraces the other side of the basel ot the rail withits jaws. A sliding plate is then insertcdin grooves in the' wallsof thetrough, locking the wholei" A- mortse in the s ides of the troughenables the rail' to riseand fall, by the operation ofthe springs andweight of the cars, and assists to hold the rail'in place.

By the use of this sill and chair, the raill is held far more securelythan by any means now used, and the elasticity given, by the use of thesprings, will materially diminish the joltiug of the cars; and the wearand tear of rails,chairs, sills, permanent way, and rolling-stockwillb'e greatly reduced In the accompanying 4drawings-l 'l Figure 1 is avertical longitudinal; section of my improved sill-and chair, and

Figure 2 is a transverse section thereof at line :v x. y

Similar letters-ot' reference indicate corresponding parts. A A is thebase-plate of sill, 'having walls B B set upon it, inclined towardeachother, as shown in iig. 2,

but at suiiieient distance apart to admit of the plate C and chairs Ddove-tailing between them, as hereinafter described.

One end of the sill is closed by the wall E, and the other by thesliding plate F sliding in groovesfvin the walls B and base-plate A. e

The walls AB are strengthened by trusses b, as shown in g. 2.

In themortises ain the base-plate A are placed the springs G, on whichrests the lng d attached to the' bottom of the plate C. I l

The plate C being dove-tailed between the walls B, and i-t's lugsresting on the springs, the yTshaped chair D is then dove-tailed betweenthem, and driven up' against the wall E, with its jaws d d directedoutward, the' chair D resting on the plate C. The rail H' is then placedupon the sill, its base, t, being inserted, across the walls B B, inmortises in the upper part of said,l walls fitted to receive it; oneside of the'base beipg inserted in the `iaws del of the chair D.The-other chair D is then dove-tailed between the walls B,and embracesthe other side of the base ofthe rail A with its jaws, and the slidingplate F is then inserted in the groovesf, locking the' wholearrangement.l

The chairs'D are provided with a neck, cl, having a rectangular verticalsection, to allow the chair to move up andidown between the walls B,according as the springs G are acted upon or released by the weight ofthe cars, and keep the neck ofthe chair home to the walls B B in everyposition. Y

I claim as new, and desire to secure by Letters Patenti 1. The baseplateA, walls B, and springs G, all substantially as and for the purpose setforth and described.

2. The plate C, dove-tailing between the-walls B, and provided with thelugs c, substantially as -above set forth and described.

3. The chairs D, dove-talng'betwee tho walls B, on'dprovded withV thejaws del, in manner substatally 4. The railroad-si1l-and chair,consisting of a bose-plate, A, walls B, `and plot@ C, restixng on'springs G, in combination with chairs D, furnished with the jaws d d, inmanner an'd for 'the purposes substantially as above Y' set forth anddescribed.

JASPER SNELL. Witnesss:

Gr. W. SGHUERR, Cms. FRAILEY,

